User:Tk/Notebook/MF-xfm/2008/04/06: Difference between revisions
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== | ==Prepare electrocompetent M.florum cells== | ||
* | |||
* Grow 45 ml culture in 1161 medium, no antibiotic | |||
** growth is to yellow, light turbid phase | |||
* Chill culture on ice for 30 minutes while fast cooling centrifuge | |||
* Spin down 10 min at 9000g | |||
* remove supernatent, resuspend pellet | |||
* Add 45 ml ice cold EPB | |||
* leave on ice 15 minutes | |||
* Spin down 10 minutes at 9000g | |||
* remove supernatent, resuspend pellet | |||
* Add 45 ml ice cold EPB | |||
* leave on ice 15 minutes | |||
* Spin down 10 minutes at 9000g | |||
* remove all supernatent, resuspend pellet | |||
* Bring pellet to 250 μl volume (200x concentration) | |||
* Add 25 μl glycerol (10%) | |||
* leave on ice for 30 minutes | |||
* Aliquot 5x 50 μl into 1.7 ml eppendorfs, prechilled on ice | |||
* Flash freeze in dry ice/ethanol | |||
* Store at -80C until use | |||
==Make transposomes== | |||
* Add 2 μl 100 ng/μl ME0 PCR DNA | |||
* Add 4 μl 500 ng/μl transposase | |||
* Add 2 μl glycerol | |||
* incubate at 37C for 1 hour | |||
* hold at -20C indefinitely | |||
* Made 80 μl transposomes with ME0/PCR/PCR cleanup DNA 118 ng/μl (20 μl) | |||
* Will test with E. coli transformations | |||
* Will test with M. florum transformations | |||
==Electroporation results== | |||
* 1 ng/ul and 100 pg/ul E. coli transformations sparked at 2.5 KV | |||
* 10 pg/ul and transposome E. coli transformations worked at 2.5 KV | |||
* Me. florum transformations with transposomes sparked at 2.5 KV and 2.2 KV, functioned at 2.0 KV | |||
* Outgrowth for 1 hour, plate on LB amp and LB Tet for E. coli, 1161 agar + tet for Me. florum | |||
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Revision as of 21:42, 19 June 2008
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Prepare electrocompetent M.florum cells
Make transposomes
Electroporation results
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